Our gas dryer will not stay ignited. Started out it would stay on for 10 to 15 minutes and then not dry. Dryer would keep running but without heat. Now it only goes about 4 minutes before the flame and igniter turn off. We are thinking we need AP4008890 the three coil kit. Can you confirm this or is it easy to check to see which coil is bad. However, if one is bad, are the others far behind? The dryer is 30 years old but was working well up to this event.
Thank you.